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Preparation of average annual runoff map of the United States, 1951-80
W.R. Krug, W.A. Gebert, D.J. Graczyk
1989, Open-File Report 87-535
Average annual runoff was computed or estimated for 2,148 hydrologic cataloging units in the United States and Puerto Rico , for the period 1951-80. Runoff was computed from the recorded streamflow at 5,951 U.S. Geological Survey gaging stations. The runoff at more than 3,000 of these stations was estimated by...
Characteristics and trends of streamflow and dissolved solids in the upper Colorado River Basin, Arizona, Colorado, New Mexico, Utah, and Wyoming
Timothy D. Liebermann, David K. Mueller, James E. Kircher, Anne F. Choquette
1989, Water Supply Paper 2358
Annual and monthly concentrations and loads of dissolved solids and major constituents were estimated for 70 streamflow-gaging stations in the Upper Colorado River Basin. Trends in streamflow, dissolved-solids concentrations, and dissolved-solids loads were identified. Nonparametric trend-analysis techniques were used to determine step trends resulting from human activities upstream and long-term...
Field conditions at the Maricopa Agricultural Center, Pinal County, Arizona, September 28, 1989
Sandra J. Owen-Joyce
1989, Open-File Report 89-590
Field conditions were documented during the Landsat and SPOT satellite overpasses of the Maricopa Agricultural Center, Pinal County, Arizona, on September 28, 1989. Crop types were mapped and photographed for each demonstration farm field, and irrigation, cultivation, and orientation of rows are described. Field and photographic descriptions are presented in...